Re: Cyanobacteria

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johncodie:

A few years back, there was a study by UF resulting from
complaints about aquatic plants, disappearing. The conclusion
as I recall was a surprise to the complainants: Pool water
dumped into Crystal River was the cause.

An ag herbicide, was also marketed as an algicide. No mystery
on damage to aquatic plants there. It's easy to see how
microbial communities are knocked out of balance. Typically,
target organisms are the focus, ignoring the effect on non-
target organisms. I'd say it's catching up with us.

Interesting thought on the pool water, eventually we'll be
drinking it. I take it there is a problem with efficacy in
algicides/fungicides which have been used in pools? Why would
EPA care about efficacy for registered actives? Is there some
consequence associated with inability to control the target
organism?

Thanks for the information

ff

On 2/17/04, johncodie wrote:
> You can count on alot of pools being drained down to refill
> with fresh water to limit the amounts of nitrates that are
> full of copper. With the restrictions of what the EPA is
> allowing to-date in pool fungacides that work poorly, we can
> count on more drainage and fresh starts. Anyone in the
> sunshine state got any idea on how many thousands of pool
> water gets pumped into the environment. Although we pay for
> the treatment here in the purchase price for the water,
there
> are currently no requirement to drain to treatment
facility.
> I understand that is all but going to start being required
by
> the municpalities in the near term. I can attest to the
> green slime being resistant to the cu. It took a supper
> shock clorination just to get it burned out. Nothing works
> right without a balanced ph either.
>
> On 2/17/04, ff wrote:
>>
>> johncodie:
>>
>> Recently, the Orlando Sentinel reported on experiments
>> inspired by a presentation in Florida by Dr. Shoemaker.
>> Cyanobacteria, a major problem now for several years
>> throughout the state, and elsewhere, is resistant to Cu
>> according to Dr. Shoemaker. The experiments conducted
>> here locally, proved this to be the case. Cu added to
>> water containing cyanobacteria, resulted in a population
>> explosion. (note:Cu not uncommon in fungicides/anti-
>> microbials)
>>
>> Any Cu available, as in condensing coils, for growth of
>> the highly toxic cyanobacteria? UF and others also found
>> cyanobacteia thriving in, well, let's say non-aquatic
>> environments. Also pseudomonas, fusarium, stachy...
>>
>>
>> ff

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